Just so you know - my DD (8yo) has already started wth pubic hair and breasts. She will be 9 in Feb and has carried a panty liner and pad with a change of underwear for the past 6 months.

I was also able to find a great age appropriate book to help explain all the changes to her body, we normally read it together so any questions she has are answered straight away.

I cried when DD showed me she was growing up. She was so young! (I think) I think training bra's will be bought before the year is out. I consider myself lucky though and she is quite mature about getting a period and talking to me about it.